MRCOOL DIY® 5th Gen 27,000 BTU Multi-Zone Mini Split Condenser 230V, DIY-MULTI4-27HP230D-O

MRCOOL® DIY 5th Gen 27,000 BTU 4-Zone Multi-Zone Mini Split Condenser – 230V

Model: DIY-MULTI4-27HP230D-O

Experience flexible zone control and energy-efficient performance with the MRCOOL® DIY 5th Gen 27,000 BTU Multi-Zone Mini Split Condenser. Designed for fast DIY installation, this 230V outdoor unit supports up to four zones and connects with multiple air handler combinations for personalized comfort throughout your home or workspace. Requires at least 2 air handlers to operate and supports up to 33,000 BTU total indoor capacity.

Key Features

• DIY Installation: Tool-free setup with pre-charged Quick Connect® line sets – no vacuum or special tools required
• Smart Control: Compatible with Smart HVAC App, Amazon Alexa & Google Assistant for voice-activated comfort
• Eco-Friendly Refrigerant: Pre-charged with R-454B, a low-GWP refrigerant that reduces environmental impact
• Gold Fin® Condenser: Anti-corrosive finish protects against coastal conditions and extends lifespan
• DIYPRO® Cable: Armored communication wire eliminates the need for electrical conduit outdoors
• Trusted Warranty: 7-Year compressor warranty, 5-Year parts warranty, and optional Lifetime Replacement with MRCOOL® Care registration

System Specs

• Cooling Capacity: 27,000 BTU/h
• Heating Capacity: 28,400 BTU/h
• SEER2: Approx. 21.2 (varies by air handler configuration)
• HSPF2-4: ~10.3 | HSPF2-5: ~8.2
• Power Supply: 208–230V, 60Hz, 1 Phase
• Minimum Circuit Ampacity: 24 A
• Maximum Fuse: 25 A
• Refrigerant Type: R-454B (Charge: ~67.37 oz)
• Line Set Sizes: 3/8" Liquid x 5/8" Gas
• Recommended Coverage: 1,100 – 1,400 sq. ft. (based on configuration and insulation)

Compatible Air Handler Combinations (Max 33,000 BTU)

This condenser supports 6K, 9K, 12K, and 18K MRCOOL 5th Gen air handlers. A minimum of 2 air handlers must be connected, and total combined capacity should be between 70% and 122% of the rated output (18,900 – 33,000 BTU).

Examples of valid combinations include:

• 12K + 12K + 6K = 30K
• 9K + 9K + 9K = 27K
• 18K + 12K = 30K
• 6K + 6K + 12K = 24K
• 9K + 12K + 6K = 27K

Recommended Wire Size

• Recommended: 10 AWG copper wire – supports 24A MCA and 25A max fuse
• One Size Smaller (12 AWG): Not recommended – may overheat under load and violate NEC code
• One Size Larger (8 AWG): Ideal for long wire runs or added safety margin to reduce voltage drop

Note: Always verify total indoor air handler capacity before ordering. MRCOOL DIY condensers are pre-charged with R-454B and are not interchangeable with R-410A systems. Specifications may vary by production batch.

Buy confidently from MRCOOL DIY Direct – America’s most trusted source for DIY HVAC systems.